<span>I believe the answer is this:
A free-diving vessel used to explore the ocean at great depths.
Hope this helps.</span>
Answer:
analogous
Explanation:
both a bats wing and a butterfly wing are there for the same reason, but they are not composed the same
The deep sea vent organisms or benthic organisms normally live in dark conditions because of no penetration of sunlight. These organisms in order to colonize ocean surface must develop photo sensory receptors and should adapt to the light conditions along with variation in temperatures and pressure in ocean currents.